:root {
  --bg-canvas: #eef7f2;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f3faf5;
  --text-primary: #1f2937;
  --text-muted: #4b5563;
  --accent-primary: #14532d;
  --accent-secondary: #166534;
  --accent-light: #dcfce7;
  --accent-border: #bbf7d0;
  --border-subtle: #cbd5e1;
  --border-muted-green: #99f6e4;
  --card-border: #86efac;
  --radius-organic: 20px;
  --radius-sm: 8px;
  --font-serif: Charter, Cambria, Georgia, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --line-max: 70ch;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
  hyphens: auto;
  -webkit-font-smoothing: antialiased;
}

/* Header & Notification Bar */
.transit-alert-bar {
  background-color: var(--accent-primary);
  color: #f0fdf4;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.5rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.transit-alert-bar span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.site-header {
  background: var(--bg-surface);
  border-bottom: 1px solid #d1fae5;
  position: relative;
  z-index: 50;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-wrapper {
  text-align: left;
}

.brand-logo {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--accent-primary);
  text-decoration: none;
  display: block;
  letter-spacing: -0.01em;
}

.brand-sub {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  display: block;
}

.main-nav {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.main-nav a {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background-color 0.2s;
}

.main-nav a:hover, .main-nav a.active {
  color: var(--accent-primary);
  background-color: var(--accent-light);
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--accent-secondary);
  color: var(--accent-primary);
  font-size: 1.5rem;
  line-height: 1;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
}

.mobile-menu-dropdown {
  display: none;
  background: var(--bg-surface);
  border-bottom: 2px solid var(--accent-primary);
  padding: 1rem 1.5rem;
}

.mobile-menu-dropdown.is-open {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mobile-menu-dropdown a {
  font-family: var(--font-sans);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  padding: 0.5rem 0;
  border-bottom: 1px solid #f1f5f9;
}

/* Layout Core */
.main-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.section-ledger {
  margin-bottom: 4.5rem;
}

.section-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-secondary);
  font-weight: 700;
  margin-bottom: 0.5rem;
  display: inline-block;
}

h1, h2, h3, h4 {
  color: var(--accent-primary);
  font-weight: 700;
  line-height: 1.25;
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.85rem;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.35rem;
  margin-bottom: 0.6rem;
}

p {
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.lede-p {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: var(--line-max);
}

/* Button & Links */
.btn-pill {
  display: inline-block;
  background-color: var(--accent-primary);
  color: #ffffff;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.75rem;
  border-radius: 9999px;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color 0.25s var(--ease-kinetic), transform 0.2s;
  cursor: pointer;
}

.btn-pill:hover {
  background-color: var(--accent-secondary);
  transform: translateY(-2px);
}

.inline-link-expand {
  display: inline-flex;
  align-items: center;
  color: var(--accent-primary);
  font-family: var(--font-sans);
  font-weight: 600;
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
}

.inline-link-expand::after {
  content: " →";
  transition: transform 0.2s ease;
}

.inline-link-expand:hover::after {
  transform: translateX(4px);
}

/* Angled Canvas Cut */
.angled-cut-top {
  clip-path: polygon(0 0, 100% 3vw, 100% 100%, 0 100%);
  background: var(--bg-surface);
  padding-top: 3.5rem;
}

/* Cards & Dossiers (1px border, no drop-shadows) */
.flat-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-organic);
  padding: 2rem;
  box-shadow: none;
  transition: border-color 0.2s, background-color 0.2s;
}

.flat-card:hover {
  border-color: var(--accent-secondary);
  background-color: var(--bg-surface-hover);
}

.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.grid-3col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}

/* Hero Section With Documentary Visual & Metrics Deck */
.hero-ledger {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
  margin-bottom: 4rem;
}

.hero-visual-frame {
  position: relative;
  border-radius: var(--radius-organic);
  overflow: hidden;
  border: 1px solid var(--card-border);
}

.hero-visual-frame img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  display: block;
}

.hero-floating-metrics {
  background-color: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-organic);
  padding: 2.25rem;
}

.metric-row {
  border-bottom: 1px solid #e2e8f0;
  padding: 1rem 0;
}

.metric-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.metric-val {
  font-family: var(--font-sans);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-primary);
  line-height: 1;
}

.metric-desc {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Full Width Lead Case Study */
.lead-study-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--accent-secondary);
  border-radius: var(--radius-organic);
  padding: 2.5rem;
  margin-bottom: 3.5rem;
}

.transit-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.transit-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
  min-width: 620px;
}

.transit-table th {
  background-color: var(--accent-light);
  color: var(--accent-primary);
  font-family: var(--font-sans);
  font-weight: 700;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--card-border);
}

.transit-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid #f1f5f9;
  font-family: var(--font-sans);
}

.transit-table tr:hover td {
  background-color: #f8fafc;
}

/* Interactive Transit Efficiency Manifesto Generator Tool */
.manifest-tool {
  background: var(--bg-surface);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-organic);
  padding: 2.5rem;
  margin: 3rem 0;
}

.tool-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.field-group label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
}

.field-group select, .field-group input, .field-group textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--text-primary);
  background: #ffffff;
}

.manifest-output {
  margin-top: 1.5rem;
  background-color: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 1.25rem;
  font-family: monospace;
  font-size: 0.875rem;
  white-space: pre-wrap;
  display: none;
}

/* Image Presentation Containers */
.figure-block {
  margin: 1.5rem 0;
  border-radius: var(--radius-organic);
  overflow: hidden;
  border: 1px solid var(--card-border);
}

.figure-block img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  display: block;
}

.figure-caption {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--text-muted);
  padding: 0.75rem 1rem;
  background: #fdfdfd;
  border-top: 1px solid #f1f5f9;
}

/* FAQ Accordion */
.faq-dossier {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-organic);
  background: #ffffff;
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.faq-trigger {
  width: 100%;
  padding: 1.35rem 1.75rem;
  text-align: left;
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.faq-trigger span.icon {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  transition: transform 0.2s;
}

.faq-content {
  padding: 0 1.75rem 1.5rem;
  display: none;
  color: var(--text-muted);
}

.faq-dossier.is-active .faq-content {
  display: block;
}

.faq-dossier.is-active .faq-trigger span.icon {
  transform: rotate(45deg);
}

/* Footer Architecture */
.site-footer {
  background-color: #0f371e;
  color: #d1fae5;
  padding: 4.5rem 1.5rem 2.5rem;
  border-top: 1px solid var(--accent-secondary);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3.5rem;
  border-bottom: 1px solid #1f5030;
}

.footer-brand h4 {
  color: #f0fdf4;
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  color: #a7f3d0;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  max-width: 36ch;
}

.footer-col h5 {
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.6rem;
}

.footer-col a {
  color: #bbf7d0;
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.footer-legal-block {
  padding-top: 2.5rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: #6ee7b7;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
}

.footer-legal-block a {
  color: #a7f3d0;
  text-decoration: underline;
}

/* Scroll reveal utility */
.reveal-item {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease-kinetic), transform 0.6s var(--ease-kinetic);
}

.reveal-item.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Rules */
@media (max-width: 900px) {
  .hero-ledger {
    grid-template-columns: 1fr;
  }
  .grid-2col {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .mobile-nav-toggle {
    display: block;
  }
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.5rem;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}